Calculating-machine



A. F. POOLE. v

CALCULATING MACHINE.

APPLICATION FILED lum/21l I9I3.

Paten'd Apr. 12, 1921.

5 SHEETS-SHEET I.

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Y MME:

A. F. POOLE.

CALCULATING MACHINE- APPLICATIGN FILED JULY 21.1913.

A.' F. POOLE.

CALCUL/mms MAcHlNE.

APPLICATION FILED JULY 21,'1913.

1,374,762. Patented Apr. 12, 1921.

5 SHEETS-SHEET 3.

iiii'iii- -llmlmnmuumnl ll-l A. F. POOLE.

CALCULATING. MAQHINE. APPLlcAloNF|LED1uLY21.1913.

1,374,762. Patented Apr. 12, 1921.

5 SHEETS-SHEET 4| UNITED STATES PATENT OFFICE.

ARTHUR F. POOLE, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS,T0

REMINGTON ACCOUNTING MACHINE CORPORATION, OF NEW YORK, N. Y A COR- IPORATION 0F NEW YORK.

CALCULATING-MACHINE.

Specification of Letters Patent. Patented Apl'. 12, 1921.

Application lea July 21, 1913. serial No. 780,408.'

T o all whom t may concern.'

Be it known that I, ARTHUR F. POOLE, of Chicago, county of Cook, andState of Illinois, have invented certain new and -useful Improvements inCalculating-Machines, of which the following is a specification.

My invention is an improvement in algebraic totalizers for use incalculating machines.

One of the objects of my invention is the y provision of a totalizerwith but a single set of carrying mechanism from which the accuratetotal of a series ofitems, whether the same be positive or negative,Iwhich total I will hereafter call an algebraic total, may be read.

Another object of .my inventionl is the provision of a totalizer showingthe algebraic total on either one or the other of two sets of figuresand having an automatic means to designate which `set of figures shallbe read.

Another object of my invention is the provision of a totalizer having asingle set of reversible carrying gears and two sets of -gu'res paired0--9 associated therewith,

automatically Operated means designating which set of figures shall beread and means automatically inserting a unit in the totalizer after thelast digit of the number in- .serted has been entered.

'and easy to manufacture.

These and other objects of my invention are described in theaccompanying specification, in the drawings of which- Figure 1 is asection onthe line 1-1 of Figj2.

Fig. 2 is a section on the line 2-2 of Fi 1.

lFig. 3 is a bottom view of mechanism in the right side of Fig. 2.

Fig. 4 is a section on line 4--4 of Fig. 2. Fig. 5 'is an elevationshowing the arrangement of the carrying and carryable gears.

F ig. 6 is a section on line 6-6 of Fig. 2. 0 Figs. 7 and 8 are detailsof the units adding mechanism.

Fig. 9 is a perspective view.

As above stated, my invention .is particularly designed to be used inconnection with the calculating machine described in the aforementionedpatent. Reference thereto will show a totalizer mounted on a. typewritercarriage, a set of numeral keys, any one of which serves to Operate amaster wheel and master dog numbered 40 and 142, respectively, therein,also that the operating of any numeral key results in the master wheel40 and the master dog 142 moving in the following sequence:

(a) .Dog 142 moves in a counter-clockwise direction (Fig. l), thusunlocking the .chain of the totalizer gears at the actuated gear.

(b) The master Wheel rotates an amount depending on the key actuated.

(c) The dog returns to its original position.

(d) The carriage escapes, bringing the totalizer wheel of the next lowerOrder into engagement with the master wheel. A reversing handle is alsoprovided whereby the direction of motion of the master wheel consequentupon the actuating of any key will be determined and thus numbersinserted in the machine either additively or subtractively. I i

Since the mechanism for producing these motions is very thoroughlydescribed in the patent referred to, I shall not now enter into afurther description of such mechanism, but shall premise that theactuating Of a typewriter numeral key results in the master wheel,master dog and carriagemoving in the sequence recited above. The masterwheel numbered 40 and the masterl dog 142 in my present applicationcorrespond in position and function tothe master wheel and master dogbearing the same numbers iii3 the cited patent of Wahl referred to aove.

The mechanism constituting the totalizer Vof my presentinvention issuitably supported between three plates 10, l1 and 12. The plates 11 and12 serve for the support of totalizing mechanism similar in constructionto that shown in the totalizer of the above mentioned Wahl patent. Thisconsists of a set of carrying gears 13 (Figs. 2, 3 and 5) looselymounted on a shaft 14 rigid between the plates 11 and 12 and which areadapted to vcoperate serz'atim with the master wheel 40 rotatablymounted in the framework 63. A set of carryable gears 15 (Fig. 5) arepivoted at 16 on a set of swinging arms 1.7. rlhese arms are looselymounted on shafts 18 and 19 and their associated carryable gears 15serve to connect the carrying wheels13. Arms 17 have heels 20 adapted tobe engaged sem"- atz'm by the master dog 142. rlhe carrying gears 13 areprovided with the usualcarrying teeth which coperate with the carryablegears 15 and thus transfer the tens at the proper time. The chain ofgearing composed of/the carrying gears 13 and the carryable gears 15 -isnormally locked. llnorder for the master wheel to operate on a carryinggear at the middle ofthe chain the masterdog 142 acts on a swinging arm17, thereby raising the carryable gear 15 mounted thereon out of meshwith the carrying gears 13 to the right and left, thus unlocklng theactuated carrying gear 13 from the next one to the right.

3 The totalizer is mounted on a truck 21 moving with the typewritercarriage. Numbers are inserted in the totalizer by the master wheel onedigit at a time, beginning with the digit in the highest place andending with the digit in the units place. During the insertion of anumber the typewriter carriage escapes step by step to the left afterthe insertion of each digit, thus bringing successive carrying gears 13into mesh with the master wheel 40 and'isuccessive swinging arms 17 in aposition to be acted on by the master dog 142.

The foregoing will be recognized as sub,- stantially the operation andstructure of the totalizer in the above stated Wahl patent. The partswhich are peculiar to my present invention are those whichhave to dowith the indicating of positive and negative totals.

vThe function of these parts and the parts themselves will now bedescribed.

It is well known that when a totalizer having a `single set ofreversible carrying mechanism is provided with two sets of figureswhereby algebraic totals may be read and further that when these'figureslare paired in the relation of 0-9 8-1, et

i cetera, an extra unit must be-added to the set of figures to be readeach time the totalizer asses throughy zero in either direction. orinstance, yassuming that a positive total is exhibited by one set offigures and that a greater number than the exhibited numberis'subtracted, the set of figures which heretofore had been exhibitingthe positivel total would now change to a I and 25.

number preceded by a series of 9s, 'which number would be theA correctarithmetical complement of the negative total.v A number preceded by'aseries of Os would be exhibited by the set of figures from which thenegative total is read but this latter number,

owing tothe wheels being paired in the relation of 9 0 would be one unitle'ss than and 12, are the two sets of number wheels 24 These numberwheels 24 and 25 y have their figures arranged to progress in oppositedirections and the figures are so arranged that positive totals will beread on the number wheels 24 and negative totals I shall first describethe shutwill be read on the number wheels 25. A set of idlers 26 looselymounted on shaft 27 rotatably mounted in the side plates 10, 11 and 12(F ig. 2) communicates the motionof the carrying gears 13 to( the numberwheels (Figs. 1 and 4). Loosely mounted on the shafts 22'and-23 are twoshutters -28 and 29 for the positive and negative number wheelsrespectively. These sh-utters 28 and 29 are` in the form of bails (bestshown in Fig. 2),.

andthe leftends of these bails are formed into gearteeth 3() and 31which mesh with an idle wheel 32 rigidly attached to the shaft 27. Aspecial carrying gear 33 rotatably mounted on the shaft 14 is in meshwith the idler 32 and this .gear 33 is connected by a carryable gear 34t'o the carrying gear 13 in the highest decimal( place of the totalizer.The carryable gear 34 is exactly like the carrying gears 15. A carryabletooth` on the next carrying gear 13 to the right of thev gear 33 (Fig.5) serves to actuate thegear 34 whenever the totalizer passes throughzero. A spur gear forming a part of the gear 34 is in engagement -withthe gear 33 and turns it whenever the gear 34 is turned by the gear l 13adjacent to the right. Exactly like the right. The gear 33 has some o fits teeth cut away, as shown in Flg. 4, so as to) avoid interferencewith the master wheel. Whenever the totalizer passes through zero thecarrying wheel 13 in the highest decimal place, of course, moves. Thismotion is transmitted 'by means of the carryable gear 34 to the gear 33and by it through the idler 32 to the shutters 29 and 28.

The shutters 29 and 28 register. with suitable Windows 35 and 36 in acover 61 to thus conceal one or the other of the sets of number wheels24 and 25. When the shutters are in the position shown in Fig. 4 thefigures on the positive set of wheels are exhibited, and when theshutters are moved to their alternate position by means of the totalizerpassing through zero the shutter 28 will move in front of the window 35and the shutter 29 will move away from the window 36, thus exposing thenumbers on the negative set of number wheels.

From the foregoing it will be obvious that whenever the totalizer passesthrough zero the position of the shutters will be changed and thusexpose the total on the wheels 24 or 25 according as said total ispositive or negative, but, as previously stated, such a total is wrongby one. YIshall now describe the mechanism for inserting this unit inthe last decimal place of the totalizer subsequent to the insertion ofthe number which caused the totalizer to pass through Zero.

Referring to Figs. 1 and 2, it will be noticed that to the right of thecarrying wheel 13l in the last decimal place of the totalizer is asegmental gear 37, which is rotatably mounted on the shaft 14. Rigid inthis segmental gear 37 are two pins 38 and 39 which project throughsuitable openings 'in the side plate 11. A carryable gear 62, which isr'nounted on a' swinging arm 17 and is similar to the other carryablegears 15 previously referred to, connects ythis segmental gear with thecarrying wheel 13 in v vthe units place of the totalizer. A dog 41rotatably mounted on the shaft 18 and held in engagement with thesegmental gear 37 40 by a spring 42 serves to lock the segmental gear inplace. I t will now be seen that any rotation ofthe segmental gear 37will be transmitted through the carryable gear 62 v to the carryingwheel 13 in the units' Place of the totalizer. A gear 43 is rigid with`the shaft 27. It will be remembered that this shaft is moved every timethe totalizer lpasses through zero. The gear 43 engages a gear 44 rigidon a shaft 45 which is pivoted between the plates 10 and 11. -Rigid onthe same shaft is the arm 46 having pivoted on it at 47 a cam 48. Thiscam has two surfaces 49 and 50 adapted to contact with the pins 38 and39 and also-'a slot 51 in which moves a pin 52 rigidly mounted in alever 53 rotatably mounted'; en the shaft 18. The arm 46 has two lockingslots 54 and 55 which are engaged by a pin56 rigidly mounted in the arm53 when the latter is raised. A lever 57 is also rotatably mounted onthe shaft 18 and is connected to the arm 53 by aspring 58. The left endof this lever (Fig. 1) ter- .minates in a cam surface 59 which isadapted to engage a cam surface 60 rigid on the actuator framing 63subsequently to the insertlon by the master wheel of the last digit of anumber.

It will be remembered that when a number is inserted in the totalizerthe highest digit-is entered first and the totalizer travels step bystep to the left, the master wheel coperating with successive carryinggears as the number is inserted digit by digit until the last digit isinserted and then the totalizer may continue its travel to the left forsome little distance. After the insertion of every number the cam 60raises the lever 57 by means of the cam 59 during such extra travel andthis motion of the lever 57 will insert a digit in the totalizer if thenumber which has just been inserted has caused the totalizer to passthrough zero. The reason of this is that when the lever 57 is raised thespring 58 raises the lever 53 to aposition where the pin 52 is collinearwith the shaft 14, thus contacting the cam surfaces 49 and 50 with thepins 38 and 39. It will be remembered that whenever the totalizer passesthrough zero the pivot 47 will change from the position shown in 90 Fig.7 to that shown in Fig. 8 or vice versa. Now, assuming the pivot 47 isin the position shown in Fig. 7, the pins 38 and 39 in the positionshown in full lines in the same figure and-the cam 48 is raised by thepin 95 52 until 52 is concentric with the shaft 14, it is obvious thatthe pins 38 and 39 will move into their dotted positions and thesegmental gear 37 in which said pins are. mounted will be turned in thedirection of the arrow. If the pivot 47 is in the position shown in Fig.8 and the pins 38 and 39 are in theirfull line position and the cam 48be raised the pins 38 and 39 will be thrown in -their dotted positionand the seg-mental gear 37 to lwhich tley are attached, will be rotatedin the reverse direction. Now, the position of the pivot 47 shown inFig. 8 is the position correspond- Y ing to the exhibition ofthepositive total, `1'10 and since the arm 46, on which the pivot 47 ismounted, is geared to the shutters and therefore moved coincidently, theposition of the 'pivot 47 shown in Fig. 8 will cor- `respond to theexhibition of a positive total,

and the position of the pivot 47 shown in Fig. 7 will correspond to theexhibition of a negative total. The parts are so proportioned that whenthe raising of the cam 48 rotates the pins 38 and 39 either in the di-12o rection as shown in Fig. 7 or the direction as shown in Fig. 8 theamount of this rotation will correspond to the insertion of one unit.The direction of insertion of this unit depends upon the position of thepivot 1'26 47which in turn depends upon the position of the shutters.Whether. the unit is inserted at all depends on whether the pivot 47 hasbeen changed since the last time the lever has been raised or since thelast num- "v lever 57 is, of course, raised by means of the cam 59 everytime a number is inserted in the totalizer but this raising will not'affect the segmental gear 37 unless the position of the pivot 47 hasbeen changed between times or unless the number just inserted has causedthe totalizer to pass through zero.

' A pin 64 rigid in the lever 53 connects this lever to the dog 41,thereby raising the dog out of engagement with the teeth of thesegmental gear 37 each time the lever 57 is raised. The spring 58connecting the lever 53 with the lever 57 is provided to Vallow someextra motion to the cam 59 beyond that required to bring the lever 53into the proper position, thus compensating for any variation ofdistance between the totalizer and the actuator.

It will be seen that I have provided a simple mechanism for giving analgebraic total. While it istrue that the totalizer may pass throughzero during the insertion of a number and temporarily exhibit a totalwhich is wrongby one, this objection is not material since as soon asthe end of the number being inserted has been reached the exhibitedtotal will be corrected by the eXtra travel of the totalizer.

Attention is called to the action of the pin 56 on the locking slots 54and 55. Besides locking the gear chain against motion while the extraunit is. inserted, this action removes whatever spiral may be in thechain before the unit is inserted. -Inspection of Figs. l, 2 and 9 willshow that the parts'arei so proportioned that on the lever 57 beingraised by cam 59 contacting' with the cam surface 60 on the framework,the pin 56 will have enteredthe inclined portion of either the slot 54or the slot 55 before the cam 48 engages the pins 38 and 39. The partsare dead portion of the slot 54 or 55.

the actuation, as for example the Wahl that when thefirst gear of achain of five'to so j totalizer shown in this present application, 1t is.impossible to make the action of' the carrylnggearson .the carryablegears such ten gears is moved, the last gear will move the same amountasthe first,owing to the necessary lost motion in the chain. In anyalgebraic totalizer in which the carrying is simultaneous with theactuation this spiral effect interferences with the subsequent insertionof a unit in the last place, for whether or not a unit is inserted isdetermined by the position of the highest gear in the chain and if thishighest gear lis not in its proper position, the totalizer will not actproperly. In

the device shown in the present application I remove all thespiral bythe action of the pin 56 on the locking slots 54. and 55 beforeinserting vthe extra units, and I wish to claim the same broadly.

l/Vhile I have shown my invention employing two .sets of number wheelsit is obvious that thisis not at all necessary since one set of numberwheels could be provided having vtwo oppositely running sets of figurespaired 0 9, and a single shutter could be vused to shift from one set offigures to the other. The' particular. reason why two sets of numberwheels were used in this present construction instead of one was fromconsiderations of space only, since in the Wahl machine the distance ofone carrying gear 13 to the next is one-tenth of an inch, therebyconforming to the ordinary typewriter pitch, a'nd there would not bespace enough to employ a number wheel with two sets of figures on itwithout making those figures undesirably small.- Moreover, I considersuch a construction an obvious equivalent of my invention.

I believe I am the first to show a ten key ladding and subtractingmachine equipped with an algebraic totalizer, which totalizer isautomatically corrected subsequently to the insertion of the lastdigitof a number of greater absolute value than and opposite sign to thepreviously exhibited total, and I wish to claim the same broadly.

When I speak of a 10 key adding machine I mean a machine having adecimal carriage on which the digits are set up sem'atz'm, asdistinguished from an 81 key machine having no decimal `carriage and in.which the numbers are first set up by the keys and then entered in allthe decimal .places of the totalizer simultaneously. Y. Obviously', a 10 key adding machine may :either have the numbers entered simultaneouslywith the action of the key, as in the Wahl machine, or may -have theaction of the key simply set up the number on. the decimal carriage andafterward transfer the set up number into the totalizer, as is done inthe Dalton machine. Another distinction between 1() key and 81 keymachines is that in the 1 key machine any key may operate in any decimalplace of the totalizer, whereas in the 81 key machine any key mayoperate in but vone decimal place of the totalizer. According tothesedefinitions a machine which hasmore than 10 keys, such, for instance, asthe ma'-,v

chine of (Jroldberg as disclosed in Patent Number 893,720, July 21,1908, which shows y.

11 keys', would reallybe in theclass of 10 place of the totalizer. Inthe claims Which follow, when I speak of anadding machine having 10 keysI intend to cover a machine which is in the 'general class of 10 keyadding machines, as defined above, even though such a machine may have agreater or lesser number o f keys than 10, the essential feature beingthat any of the keys may be used in any decimal place of the totalizer.

Many other changes in the precise construction herein disclosed may bemade by those skilled in the art Without departing from the spirit of myinvention, since I claim:

l. In a calculating machine, the combination of a master Wheel, a set ofnumeral keys, each adapted to operate a master Wheel an amountcorresponding to the value of said key, a reversible totalizer adaptedto have numbers inserted therein by said master Wheel, the arrangementof the keys, totalizer and master Wheel being such that any of the saidkeys may determine the number entered by said master wheel in any of thedecimal places of said totalizer, and means to auto-v matically insert aunit in said totalizer subsequent to the insertion of a number thereinby said keys. I

2. In a4 calculating machine the combination of a totalizer, totalizeractuating mechanism,a set of numeral keysoper'ative onl said totalizeractuating mechanism thereby to enter numbers in said totalizer, the`arrangement of totalizertotalizer* actuating mechanism and keys beingsuch that anyof said keys may determine the number lto be entered bysaid actuating mechanism 'intoany of the decimal places of saidtotalizer, and means adapted to insert automatically a unit in saidtotalizer subsequent to the insertion of a number by said totalizeractuating mechanism Whenever said insertion causes i said totalizer topass through zero.

3. In a calculating machine, the combination of a master Wheel, a set ofnumeral keys, each adapted to operate a master wheel an amountVcorresponding to the value of said key, a totalizer adapted to havenumplaces of said totalizer, means to automatically insert a unit 'insaid `totalizer subsequent to the insertion of a number therein by saidkeys, and means un'der control of the highest Wheel of said totalizer todetermine when said unit inserting means'shall be operated. v

4. In a 'calculating machine the combination of a totalizer actuatingmechanism, a totalizer adapted to have numbers inserted therein by saidtotalizer actuating mechanism, a set of numeral keys, each adapted tionor in suibtraction and means to auto-4 matically insert a unit into-said totalizer subsequent to the insertion of a number therein by saidltotalizer 'actuating mechanism.

5. In a calculating machine the combination of a totalizer, totalizeractuating mechanism, aV set of numeral keys each adapted to operate saidtotalizer actuating mechanism an amount corresponding to the value ofsaid key, the arrangement of totalizer,- totalizer actuating mechanismand keys being such that any of said-keys may determne'that the numberrepresented by said key shallbe entered by the totalizer actuatingmechanism into any' of the decimal places of said totalizer, means tocause a relative motion between said totalizer and saidtotalizeractuating mechanism and means to insert, automatically a unitin said totalizer subsequent to the insertion of a number by said vtotalizer actuating' mechanism said unit being inserted only when saidinserted num-- ber causes said totalizer to pass through zero. A

6. In a recording calculating machine the combination of, a travelingcarriage, a master Wheel, anescapement for said carriage, a set of tennumeral keys each adapted to operate said master Wheel anv amountcorrespending to the value of said keyrand su'b-l sequently actuate saidescapement, a. totalizer mounted on said carriage and operated by saidmaster Wheel, and means brought into operation by the travel of saidcarriage adapted to insert automatically a unit in said totalizersubsequently to the insertionof a number by said master wheel when eversaid totalizer passes through zero.

7. In ya calculating machine, the combination of a totalizer, a Nset ofnumeral-keys adapted to insert numbers therein, a decimal carriagemovable step by step from one decimal position to another, and meanswhereby anadditional step of said carriage beyond the lastv decimalposition of the t0- talizer mayinsert a number in said totalizer.

8. In a calculating machine, the combination of a totalizer, a set ofnumeral keys adapted to insert numbers therein' in one direction for`addition and in the reverse direction for subtraction, a decimalcarriage movablestep by step from one decimal po- A sition to another,and means whereby an additional step of said carriage beyond the lastdecimal position of the totalizer may inserta number in said totalizerin the same direction as that in which the last preced- 6 ing number wasinserted.

9. In a totalizer a movable pivot and means adapted to actuatertheWheels of said totalizer mounted on said pivot.

10. In a. totalizer a movable pivot Whose 10 position is determined bythe highest Wheel of the said totalizer and means adapted to actuate theWheels of said totalizer mounted on said pivot.

1l. In a totalizer a movable pivot Whose position is determined by thehighest Wheel of said totalizer and means adapted to actuate the Wheelsof said totalizer in either direction mounted .on saidpivot.

12. In a calculating machine, the combination of a totalizer containinga set of Wheels, a movable pivot operatively connected With saidtotalizer and adapted to occupy either of tWo .positions correspondingto tWol positions of one of the Wheels of the totalizer,a bar mounted onsaid pivot,

` set of Wheels, a movable pivot Whose position 1s governed by one ofsaid totalizer "Wheels, a bar mounted on said pivot, a second totalizerWheel, a 1Apair ofpins projecting vfrom said second Wheel into the planeof said bar, and ymeans to bring said bar in contact with one or theother of said pins,

according to the position'of said movable pivot. l

14:1.' In a totalizer va movable pivot Whose posltion is determined-bythe highest Wheel in the totalizer and means adapted to adda unit insaid totalizer mounted on said pivot.

15. In a totalizer^ a movableepivot vWhose position is determined by thehighest Wheel in the totalizer and means adapted to add a unitv in saidtotalizer ,in either direction mounted on said pivot. i

16. In a calculating .machine the combination of a totalizer, a masterWheel, a deci.-

mal carriage, means to cause a relative mo- Jtion of said totalizer andmaster Wheel, a

set of keys adapted to actuate said master Wheel and determine a step bystep motion of said decimal carriage, the arrangement of keys, masterWheel and, totalizer being such that any of said keys may determine thatthe number represented by said key 4may 'be entered ,in any decimalplace of said .totalizer and. means toinsert va unit in said totalizerindependent of the opera- A tion of said keys.

motion of said decimal carriage, and meansv controlled by-the motion ofsaid vdecimal carriage to add a unit in said totalizer independent ofthe operation of said keys.

18. In a calculating machine, the combination of a totalizer, a set ofnumeral keys' adapted to insert numbers therein, a decimal carriagemovable step by step from one denominational position to another, andmeans including a cam and follower mechanism brought into coperation byan additional step of the carriage beyond the last decimal position ofthe totalizer to insert a number in said totalizer.

19. In a calculating machine, the combination of a decimal carriage, atotalizer, a cam on said decimal carriage, and means brought intooperation by said cam to add a unit in said totalizer.

20. In a totalizer, the combination of a lever mounted on a movablecenter, a totalizer Wheel having teeth thereon, and means including saidlever to actuate said totalizer Wheels independent of said teeth in adirection determined by the position of said movable center.

21. In a totalizer thev combination of a lever mounted on a movablecenter, means to change the position of said movable centalizer throughzero, and means to actuate the Wheels of said totalizer in a directiondetermined by the position of said movable center.

22. In a calculating machine the combination of a decimal carriage, atotalizer, a lever mountedl on a movable center, means to change theposition of said center coincident with the passage of said totalizerter coincident with the passage of said tothrough zero and meansoperated by the l decimal carriage tooperate said lever and therebyinsert a unit in said totalizer in a direction 'determined by theposition of said movable center.

23. In a lcalculating machine the combination of a decimal carriage, atotalizer embodying a set of carrying Wheels rotatable about a center, amovable pivot whose po- .sition is determined by the highest Wheel ofsaid totalizer, a lever mounted on said movable pivot' and adapted toadvance said totalizer wheels one step in either direction,l

a second lever, a pin and slot connection between said rst lever andlsaid second lever,

Iand means operated by the motion of the decimal carriage to bring saidpin and slot connection in line with the center of said v totalizerWheels.

24. In a calculating machine, the combination of a totalizer, saidtotalizer including a set of carrying gears and a set of carryablegears, means for the insertion of a unit in said totalizer as anincident of the passing of the highestv carrying gear through 0, andmeans to remove the spiral consequent upon the passing of saidhighest lcarrying gear through 0 before the insertion of said unit. 1

25. In a calculating machine, the combination. of totalizer actuatingmechanism, a set of numeral keys, each adapted to operate said totalizeractuating mechanism an amount corresponding to the value of said -key,ya totalizer adapted to .have numbers inserted therein by said totalizeractuating mechanism,` the arrangement of the. keys,

totalizer'and totalizer actuating mechanism being -such that anv of thesaid keys may determine the number entered by said t0- talizer actuatingmechanism lin any of the decimal places of said totalizer, means toautomatically insert a unitin said totalizerv.

subsequent to the insertion of a number therein by said keys, and meansunder control of the highest wheel of said totali'zer to determine whensaid unit inserting means shall be operated.

26.. In a totallzer the combination of 'a totalizer Wheel having teeth,'an'.actuating means adapted to-turn said wheel by means .Y of saidteeth, a lever mounted on a movable Icenter and means to actuate 'saidtotalizer. 85fwheel upon the operation of-said lever and in thedirection determined bythe said mov.-

27. In a calculating machine, the combination of a ttalizer, totalizer:actuating 40 Amechanism, a set of numeral keys Operative on saidtotalizer actuating'-mecha'nism to `enter numbers thereby in saidtotalizerfthe arrangementof totaliz'er, actuating mecha- `nism and keysbeing such nthat any of saidA keys' may determine the number to be entered by said actuating 'mechanism into any i .ferring from one of saidWheels to another,

an actuator for .said totalizer, a decimal car-- riage movable step bystep to bring oneof 60 Y said lwheels after another into coperation With'said actuator, a` toothed device con nected with the Wheelof highestorder, and a device moved radially-TintoI engagement with said tootheddevice by an additional 65 step of said carriage beyond the last decimalvposition of the totalize to bring said toothed device and said highestwheel toV correct position.

, 29. In a calculating machine, the combi 7 0 nation of lan algebraictotaliz'er' comprising a series of Wheels, an actuator, a Vdecimalcarriage for bringing said totalizer Wheels one after anotherinto'coperation with said actuator, means for carrying the tens from one'of said wheels to another, adevicemov-z able Vto one position when the.totalizer passes through zero in a positive direction land to a secondposition whensaid totalizer passes throughzeroin a negatlve direction,

and a delayed action device acting rst. to true up said two-positiondevice and then to insert the necessary number in the totalizer.

In WitnessV whereof I have hereunto 85 signed 'my name, this 16th 'dayof July, 1913.

ARTHUR F. POOLE.

Witnesses:

D.l W. GALL, E. P. BITZER'.

